Patents by Inventor Evert Lessing

Evert Lessing has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20240226919
    Abstract: The present disclosure relates to a hydrocyclone separator for size classifying solid material in liquid suspension, comprising a head part, a tapered separation part, and an apex discharge part for underflow discharge, the tapered separation part being arranged between the head part and the apex discharge part, wherein the apex discharge part has a first opening aligned and attached with the tapered separation part, and has a second opening for underflow discharge in a surface opposite to the first opening, the first opening being larger than the second opening, and an inner surface of the apex discharge part has a curvature extending from the first opening to the second opening, and wherein the apex discharge part at the second opening ends in a curvature in a tangential angle, ?, within the range of 0°<?<40° from a reference plane defined transverse to a common symmetry axis of the tapered separation part and the apex discharge part.
    Type: Application
    Filed: October 21, 2022
    Publication date: July 11, 2024
    Applicant: Metso Outotec USA Inc.
    Inventors: Joshua Sorrell, Evert Lessing
  • Publication number: 20240131531
    Abstract: The present disclosure relates to a hydrocyclone separator for size classifying solid material in liquid suspension, comprising a head part, a tapered separation part, and an apex discharge part for underflow discharge, the tapered separation part being arranged between the head part and the apex discharge part, wherein the apex discharge part has a first opening aligned and attached with the tapered separation part, and has a second opening for underflow discharge in a surface opposite to the first opening, the first opening being larger than the second opening, and an inner surface of the apex discharge part has a curvature extending from the first opening to the second opening, and wherein the apex discharge part at the second opening ends in a curvature in a tangential angle, ?, within the range of 0°<?<40° from a reference plane defined transverse to a common symmetry axis of the tapered separation part and the apex discharge part.
    Type: Application
    Filed: October 20, 2022
    Publication date: April 25, 2024
    Applicant: Metso Outotec USA Inc.
    Inventors: Joshua Sorrell, Evert Lessing
  • Publication number: 20170014832
    Abstract: According to one aspect, a lifter bar may be provided that is formed at least partially from an elastomeric material and includes at least one attachment formation embedded at least partially in the elastomeric material. In other aspects, the attachment formation may include a longitudinal spine that may include apertures, may be substantially planar, and may include a track.
    Type: Application
    Filed: June 21, 2016
    Publication date: January 19, 2017
    Applicant: WEIR MINERALS AUSTRALIA LTD
    Inventors: Daniel Watt, Evert Lessing
  • Patent number: 9533309
    Abstract: A lifter bar includes at least one attachment formation for use in lifting the lifter bar; wherein the at least one attachment formation is embedded in the lifter bar. A method of producing the lifter bar and tools for use in handling the lifter bar are also described.
    Type: Grant
    Filed: December 14, 2011
    Date of Patent: January 3, 2017
    Assignee: Weir Minerals Australia Ltd.
    Inventors: Daniel Watt, Evert Lessing
  • Publication number: 20160297649
    Abstract: A lifting device for use, in one embodiment, to hoist a lifter bar is described. A method of affixing a lifting device to a lifter bar is also described.
    Type: Application
    Filed: June 21, 2016
    Publication date: October 13, 2016
    Applicant: WEIR MINERALS AUSTRALIA LTD
    Inventors: Daniel Watt, Evert Lessing
  • Publication number: 20130299617
    Abstract: A lifter bar is includes at least one attachment formation for use in lifting the lifter bar; wherein the at least one attachment formation is embedded in the lifter bar. A method of producing the lifter bar and tools for use in handling the lifter bar are also described.
    Type: Application
    Filed: December 14, 2011
    Publication date: November 14, 2013
    Inventors: Daniel Watt, Evert Lessing